605539381 has 2 divisors, whose sum is σ = 605539382. Its totient is φ = 605539380.

The previous prime is 605539379. The next prime is 605539397. The reversal of 605539381 is 183935506.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 377680356 + 227859025 = 19434^2 + 15095^2 .

It is a cyclic number.

It is not a de Polignac number, because 605539381 - 2¹ = 605539379 is a prime.

It is a super-2 number, since 2×605539381² = 733355883883726322, which contains 22 as substring.

Together with 605539379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (605539321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302769690 + 302769691.

It is an arithmetic number, because the mean of its divisors is an integer number (302769691).

Almost surely, 2^605539381 is an apocalyptic number.

It is an amenable number.

605539381 is a deficient number, since it is larger than the sum of its proper divisors (1).

605539381 is an equidigital number, since it uses as much as digits as its factorization.

605539381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 605539381 is about 24607.7097877881. The cubic root of 605539381 is about 846.0203264756.

The spelling of 605539381 in words is "six hundred five million, five hundred thirty-nine thousand, three hundred eighty-one".